Caladenia plicata

Caladenia plicata, commonly known as the crab-lipped spider orchid, is a species of orchidendemic to the south-west of Western Australia. It has a single hairy leaf and one or two red, yellow and pale green flowers with an unusual labellum which vibrates in the slightest breeze.

Caladenia plicata labellum detail
Species of orchid

Crab-lipped spider orchid
Caladenia plicata growing in Mount Barker
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Caladenia
Species:
C. plicata
Binomial name
Caladenia plicata

Synonyms[1]

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Caladenia macrostylis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf, 80–200 mm (3–8 in) long and 6–12 mm (0.2–0.5 in) wide. One or two red, yellow and pale green flowers with red markings and 30–50 mm (1–2 in) long and 30–40 mm (1–2 in) wide are borne on a stalk 160–350 mm (6–10 in) tall. The sepals have thick brown club-like glandular tips 3–5 mm (0.1–0.2 in) long. The dorsal sepal is erect, 20–25 mm (0.8–1 in) long and about 2 mm (0.08 in) wide. The lateral sepals are 20–25 mm (0.8–1 in) long, about 4 mm (0.2 in) wide, curve downwards and are parallel to each other. The petals are 20–25 mm (0.8–1 in) long and about 2 mm (0.08 in) wide and curve downwards. The labellum is 6–8 mm (0.2–0.3 in) long and 9–11 mm (0.35–0.43 in) wide, red or sometimes pale green and vibrates in the slightest breeze. The sides of the labellum curve downwards and have many spreading teeth up to 4 mm (0.2 in) long. There is a dense band of dark red calli up to 3 mm (0.1 in) long in the centre of the labellum. Flowering occurs from September to early November.[2][3][4]

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